package org.maxgamer.QuickShop.Listeners;

import org.bukkit.Bukkit;
import org.bukkit.GameMode;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerMoveEvent;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.util.BlockIterator;
import org.maxgamer.QuickShop.QuickShop;
import org.maxgamer.QuickShop.Shop.Info;
import org.maxgamer.QuickShop.Shop.Shop;
import org.maxgamer.QuickShop.Shop.ShopAction;
import org.maxgamer.QuickShop.Shop.ShopType;
import org.maxgamer.QuickShop.Util.MsgUtil;
import org.maxgamer.QuickShop.Util.Util;

import java.util.HashMap;

public class PlayerListener implements Listener {
    private final QuickShop plugin;

    public PlayerListener(final QuickShop plugin) {
        this.plugin = plugin;
    }


    /**
     * Handles players left clicking a chest. Left click a NORMAL chest with
     * item : Send creation menu Left click a SHOP chest : Send purchase menu
     */
    @SuppressWarnings("deprecation")
    @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
    public void onClick(final PlayerInteractEvent e) {
        final Block b = e.getClickedBlock();
        final Player p = e.getPlayer();
        if (e.getAction() != Action.LEFT_CLICK_BLOCK || (e.getMaterial() == plugin.getConfigManager().getSuperItem() && (b.getType() == Material.WALL_SIGN || p.getGameMode() == GameMode.CREATIVE))) {
            return;
        }
        final Location loc = b.getLocation();
        final ItemStack item = e.getItem();
        // Get the shop
        Shop shop = plugin.getShopManager().getShop(loc);
        // If that wasn't a shop, search nearby shops
        if (shop == null && b.getType() == Material.WALL_SIGN) {
            final Block attached = Util.getAttached(b);
            if (attached != null) {
                shop = plugin.getShopManager().getShop(attached.getLocation());
            }
        }
        // Purchase handling
        if (shop != null && p.hasPermission("quickshop.use") && (plugin.getConfigManager().isSneakTrade() == p.isSneaking())) {
            shop.onClick();
            // Text menu
            MsgUtil.sendShopInfo(p, shop);
            if (!plugin.getConfigManager().isEnableMagicLib() && b.getType() == Material.WALL_SIGN) {
                final Inventory in = Bukkit.createInventory(null, 9, plugin.getConfigManager().getGuiTitle());
                in.setItem(4, shop.getItem());
                p.openInventory(in);
            }
            // Add the new action
            final HashMap<String, Info> actions = plugin.getShopManager().getActions();
            final Info info = new Info(shop.getLocation(), ShopAction.BUY, null, null, shop);
            actions.put(p.getName(), info);
        }
        // Handles creating shops
        else if (shop == null && item != null && item.getType() != Material.AIR && p.hasPermission("quickshop.create.sell") && Util.canBeShop(b) && p.getGameMode() != GameMode.CREATIVE
                && (plugin.getConfigManager().isSneakCreate() == p.isSneaking())) {
            if (!plugin.getShopManager().canBuildShop(p, b, e.getBlockFace())) {
                // As of the new checking system, most plugins will tell the
                // player why they can't create a shop there.
                // So telling them a message would cause spam etc.
                return;
            }
            if (Util.getSecondHalf(b) != null && !p.hasPermission("quickshop.create.double")) {
                p.sendMessage(MsgUtil.p("no-double-chests"));
                return;
            }
            if (Util.isBlacklisted(item.getType()) && !p.hasPermission("quickshop.bypass." + item.getTypeId())) {
                p.sendMessage(MsgUtil.p("blacklisted-item"));
                return;
            }
            // Finds out where the sign should be placed for the shop
            Block last = null;
            final Location from = p.getLocation().clone();
            from.setY(b.getY());
            from.setPitch(0);
            final BlockIterator bIt = new BlockIterator(from, 0, 7);
            while (bIt.hasNext()) {
                final Block n = bIt.next();
                if (n.equals(b)) {
                    break;
                }
                last = n;
            }
            // Send creation menu.
            final Info info = new Info(b.getLocation(), ShopAction.CREATE, e.getItem(), last);
            plugin.getShopManager().getActions().put(p.getName(), info);
            p.sendMessage(MsgUtil.p("how-much-to-trade-for", Util.getName(info.getItem())));
        }
    }

    @EventHandler
    public void onJoin(final PlayerJoinEvent e) {
        // Notify the player any messages they were sent
        Bukkit.getScheduler().runTaskLater(QuickShop.instance, new Runnable() {
            @Override
            public void run() {
                MsgUtil.flush(e.getPlayer());
            }
        }, 60);
    }

    /**
     * Waits for a player to move too far from a shop, then cancels the menu.
     */
    @EventHandler(priority = EventPriority.HIGH, ignoreCancelled = true)
    public void onMove(final PlayerMoveEvent e) {
        final Info info = plugin.getShopManager().getActions().get(e.getPlayer().getName());
        if (info != null) {
            final Player p = e.getPlayer();
            final Location loc1 = info.getLocation();
            final Location loc2 = p.getLocation();
            if (loc1.getWorld() != loc2.getWorld() || loc1.distanceSquared(loc2) > 25) {
                if (info.getAction() == ShopAction.CREATE) {
                    p.sendMessage(MsgUtil.p("shop-creation-cancelled"));
                } else if (info.getAction() == ShopAction.BUY) {
                    p.sendMessage(MsgUtil.p("shop-purchase-cancelled"));
                }
                plugin.getShopManager().getActions().remove(p.getName());
            }
        }
    }

    @EventHandler
    public void onPlayerQuit(final PlayerQuitEvent e) {
        // Remove them from the menu
        plugin.getShopManager().getActions().remove(e.getPlayer().getName());
    }

    @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
    public void onSuperItemClick(final PlayerInteractEvent e) {
        final Player p = e.getPlayer();
        if (p.getGameMode() != GameMode.SURVIVAL || e.getMaterial() != plugin.getConfigManager().getSuperItem()) {
            return;
        }
        final Block b = e.getClickedBlock();
        if (b == null || b.getType() == null) {
            return;
        }
        // If that wasn't a shop, search nearby shops
        if (b.getType() == Material.WALL_SIGN) {
            final Block attached = Util.getAttached(b);
            final Shop shop = attached == null ? null : plugin.getShopManager().getShop(attached.getLocation());
            if (shop != null) {
                e.setCancelled(true);
                final Location loc = shop.getLocation();
                String shopmode = "";
                if (e.getAction() == Action.RIGHT_CLICK_BLOCK) {
                    if (p.hasPermission("quickshop.unlimited") && (shop.getOwner().equalsIgnoreCase(p.getName()) || p.isOp())) {
                        shop.setUnlimited(!shop.isUnlimited());
                        shopmode = shop.isUnlimited() ? "§e无限模式" : "§c有限模式";
                        p.sendMessage(MsgUtil.p("command.toggle-unlimited", shopmode));
                    }
                } else {
                    if (shop.getShopType() == ShopType.BUYING && p.hasPermission("quickshop.create.sell") && (shop.getOwner().equalsIgnoreCase(p.getName()) || p.isOp())) {
                        shop.setShopType(ShopType.SELLING);
                        p.sendMessage(MsgUtil.p("command.now-selling", shop.getDataName()));
                        shopmode = "出售模式";
                    } else if (shop.getShopType() == ShopType.SELLING && p.hasPermission("quickshop.create.buy") && (shop.getOwner().equalsIgnoreCase(p.getName()) || p.isOp())) {
                        shop.setShopType(ShopType.BUYING);
                        p.sendMessage(MsgUtil.p("command.now-buying", shop.getDataName()));
                        shopmode = "收购模式";
                    }
                }
                if (!shopmode.isEmpty()) {
                    plugin.log(String.format("玩家: %s 将 %s(%s,%s,%s) 的商店切换为 %s !", p.getName(), loc.getWorld().getName(), loc.getX(), loc.getY(), loc.getZ(), shopmode));
                }
                shop.setSignText();
                shop.update();
            }
        }
    }
}